The mobile phone or email entered during the Google developer registration process is incorrect. Enter a valid email address

This is en.gogplay.com. Just in March 2024, Google’s entire business has undergone system upgrades such as processes and UIs, including the login page of Google accounts, the first step of the developer registration process, etc., which are obviously different. In almost every step of developer registration, where you enter a mobile phone number or email address, you have clearly copied and pasted or typed in the relevant phone number or email address manually, but the box still prompts: Enter a valid email address/Enter a valid email address. Address, as shown below.

After finally struggling to nearly complete the entire process, the entered email information is still not recognized, as shown below.

I tried it many times, using different environments, different accounts, and different people. This problem occurs frequently

Currently, encoding problems have been ruled out for this type of error message. Below I will answer the cause of the problem and how to skip the error.

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https://gogplay.com/%E8%B0%B7%E6%AD%8C%E5%BC%80%E5%8F%91%E8%80%85%E6%B3%A8%E5%86%8C%E6%B5%81%E7%A8%8B%E8%BE%93%E5%85%A5%E6%89%8B%E6%9C%BA%E6%88%96%E9%82%AE%E7%AE%B1%E9%94%99%E8%AF%AFenter-a-valid-email-address/